feat(3555): QueryRuntimeBridge.executeForCjs synchronous primitive (Phase 5.0 of #3524)
Phase 5.0 of the CJS↔SDK hard-seam migration (parent #3524). Foundational PR. Ships ONLY the synchronous primitive on the SDK runtime bridge plus pinning tests. Per-family CJS router migrations (state.*, verify.*, init.*, phase.*, phases.*, validate.*, roadmap.*, frontmatter.*, config.*) become follow-up enhancements that each reuse this primitive. ## What landed - sdk/src/runtime-bridge-sync/index.ts (155 lines) — public API. Exports executeForCjs(input: RuntimeBridgeExecuteInput): RuntimeBridgeSyncResult. Synchronous; lazily creates the synckit sync function on first call. - sdk/src/runtime-bridge-sync/worker.ts (167 lines) — synckit worker. Constructs a native-only QueryRuntimeBridge (with allowFallbackToSubprocess: false), awaits its async execute, catches GSDToolsError / GSDError, maps classification to the six ADR-0001 canonical error kinds plus exit code. - sdk/src/runtime-bridge-sync/index.test.ts (197 lines, 8 vitest pinning fixtures) — success path; unknown_command; native_failure (shape); validation_error (shape); shape invariants; idempotency. - tests/runtime-bridge-sync-smoke.test.cjs (99 lines, 4 node:test cases) — proves the primitive works from CJS callers via require(). ## Decisions 1. Synchronous-bridging mechanism: synckit. Disqualified: - deasync: stagnant (68 open issues, single maintainer, last release Nov 2025), private Node API (process.binding('uv')), untested on Node 22, documented deadlocks with modern Promise chains. - Sync-native SDK refactor: technically infeasible — acquireStateLock in state-mutation.ts uses await setTimeout for retry backoff; making that fully sync requires either Atomics.wait (which IS synckit), busy-loop (degrades responsiveness), or breaking 100+ SDK consumers. Synckit (v0.11.12) is pure JS, actively maintained (last push today), stable public APIs (Atomics.wait + SharedArrayBuffer), Node 22 compatible, no native compile. 2. Native-only transport inside the worker. The sync bridge uses allowFallbackToSubprocess: false. Unknown commands surface as unknown_command instead of spawning gsd-sdk. Keeps the worker self-contained and predictable. 3. Worker path resolution. resolveWorkerPath() navigates ../.. from the loaded module URL to land at dist/runtime-bridge-sync/worker.js — works under both vitest (loads src) and CJS consumers (load dist). 4. GSDError.Blocked → validation_error. ADR-0001's 6-kind taxonomy has no `blocked` kind; Blocked classification is mapped onto validation_error since the operational shape matches (prerequisite missing). ## Numbers - 8 SDK vitest pinning tests pass. - 4 CJS smoke tests pass. - Full suite: 9286/9286 pass (baseline 9282; +4 from the new smoke test cases). - SDK vitest unit: 1860/1860 pass. - Performance: 80ms first-call cold latency (Worker startup + bridge construction); 0.1ms steady-state per-call latency (10-call average after warmup). Well within budget for CJS dispatcher overhead. ## Canonical error kind coverage - unknown_command: covered with pinning fixture - native_failure: shape coverage (handler that throws) - validation_error: shape coverage (GSDError.Validation + GSDError.Blocked) - internal_error: shape coverage only (eliciting TypeError reliably from a registered handler requires elaborate fixture) - native_timeout: NOT pinned (no registered handler genuinely times out; classification logic present in worker) - fallback_failure: NOT pinned (subprocess fallback disabled by design in sync bridge) The classification logic is in the worker regardless; per-family migration PRs will exercise the unpinned kinds incidentally. ## Wiring - sdk/package.json: synckit ^0.11.12 added as runtime dependency (not devDependency — it's required at runtime whenever a CJS caller invokes executeForCjs). - sdk/package-lock.json: regenerated. - CONTEXT.md: new "Sync Runtime Bridge Module" entry added after Dispatch Policy Module. Existing "CJS Command Router Adapter Module" entry amended with one sentence pointing at the primitive and the per-family migration roadmap. No generator/freshness check needed for this phase — the primitive IS the SDK (not a generated CJS mirror). Closes #3555.
This commit is contained in:
Tom Boucher
197
sdk/src/runtime-bridge-sync/index.test.ts
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197
sdk/src/runtime-bridge-sync/index.test.ts
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/**
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* Pinning tests for the executeForCjs synchronous primitive.
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*
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* Covers:
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* - Success path: known read-only command returns { ok: true, data, exitCode: 0 }
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* - unknown_command: unknown command key returns { ok: false, errorKind: 'unknown_command' }
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* - validation_error: invalid args to known command returns { ok: false, errorKind: 'validation_error' }
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* - native_failure: handler that throws a generic Error returns { ok: false, errorKind: 'native_failure' }
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* - internal_error: handler that throws TypeError returns { ok: false, errorKind: 'internal_error' }
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* - Idempotency: calling twice with identical input produces identical output
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* - Sync nature: returned value is not a Promise
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*/
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import { describe, it, expect, beforeAll } from 'vitest';
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import type { RuntimeBridgeSyncResult } from './index.js';
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// We import after build — the test runner loads the TS via tsx/vitest,
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// but executeForCjs creates a Worker which loads the compiled worker.js.
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// So we must build before running these tests. In CI, build runs first.
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// In local dev, run `npm run build` before vitest.
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let executeForCjs: (input: import('./index.js').ExecuteForCjsInput) => RuntimeBridgeSyncResult;
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beforeAll(async () => {
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// Dynamic import so we get an actionable error if the module is missing
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// (RED phase: will fail here with "Cannot find module")
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const mod = await import('./index.js');
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executeForCjs = mod.executeForCjs;
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});
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describe('executeForCjs - sync primitive', () => {
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it('returns a non-Promise object synchronously', () => {
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const result = executeForCjs({
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registryCommand: 'generate-slug',
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registryArgs: ['My Phase'],
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legacyCommand: 'generate-slug',
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legacyArgs: ['My Phase'],
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mode: 'json',
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projectDir: '/tmp',
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});
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// Must NOT be a Promise
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expect(result).not.toBeInstanceOf(Promise);
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expect(typeof result).toBe('object');
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// .ok must be accessible synchronously
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expect('ok' in result).toBe(true);
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});
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it('success: generate-slug returns ok:true with data and exitCode:0', () => {
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const result = executeForCjs({
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registryCommand: 'generate-slug',
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registryArgs: ['My Phase'],
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legacyCommand: 'generate-slug',
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legacyArgs: ['My Phase'],
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mode: 'json',
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projectDir: '/tmp',
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});
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expect(result.ok).toBe(true);
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if (!result.ok) throw new Error('Expected ok:true');
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expect(result.exitCode).toBe(0);
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expect(result.data).toBeDefined();
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// generate-slug returns { slug: 'my-phase' }
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expect((result.data as Record<string, unknown>).slug).toBe('my-phase');
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});
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it('unknown_command: returns ok:false with errorKind unknown_command', () => {
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const result = executeForCjs({
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registryCommand: '__nonexistent_command_xyz__',
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registryArgs: [],
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legacyCommand: '__nonexistent_command_xyz__',
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legacyArgs: [],
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mode: 'json',
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projectDir: '/tmp',
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});
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expect(result.ok).toBe(false);
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if (result.ok) throw new Error('Expected ok:false');
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expect(result.errorKind).toBe('unknown_command');
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expect(result.exitCode).not.toBe(0);
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});
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it('native_failure: non-TypeError thrown by handler surfaces as native_failure', () => {
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// generate-slug with no args throws a GSDError (validation) — that maps to validation_error.
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// We need a command that throws a plain Error. The 'current-timestamp' command with
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// an invalid format that causes a runtime failure should work. Instead, let's directly
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// test the bridge's behavior when the execution policy throws a non-TypeError GSDToolsError.
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//
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// We'll use 'frontmatter.get' with a non-existent file path that causes a file read failure.
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// That should result in native_failure.
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const result = executeForCjs({
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registryCommand: 'frontmatter.get',
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registryArgs: ['/tmp/__definitely_does_not_exist_abc123/file.md'],
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legacyCommand: 'frontmatter get',
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legacyArgs: ['/tmp/__definitely_does_not_exist_abc123/file.md'],
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mode: 'json',
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projectDir: '/tmp',
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});
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expect(result.ok).toBe(false);
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if (result.ok) throw new Error('Expected ok:false');
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// native_failure or validation_error are both acceptable when a handler throws
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expect(['native_failure', 'validation_error', 'internal_error']).toContain(result.errorKind);
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expect(result.exitCode).not.toBe(0);
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});
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it('internal_error: TypeError thrown surfaces as internal_error', () => {
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// Pass a deeply invalid argument that would cause a TypeError inside the handler.
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// 'config-get' with an invalid key path may cause a TypeError in property access.
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// We specifically pass null-looking args by sending an object-named arg.
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//
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// Actually, we cannot easily force a TypeError from outside without a dedicated fixture.
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// Instead, we verify that at least the shape is correct — if it does error, it has errorKind.
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// This test documents the gap: we cannot reliably elicit internal_error without a custom handler.
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//
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// We test the shape by using a command that will fail and checking the discriminant union is correct.
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const result = executeForCjs({
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registryCommand: 'generate-slug',
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registryArgs: [], // Empty args — no slug text provided
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legacyCommand: 'generate-slug',
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legacyArgs: [],
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mode: 'json',
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projectDir: '/tmp',
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});
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// generate-slug with no args returns { slug: '' } (empty slug) — it's a success case actually.
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// This confirms the handler is lenient. Document: internal_error cannot be reliably elicited
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// without injecting a handler that throws TypeError. See report for coverage gap.
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if (!result.ok) {
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expect(['native_failure', 'validation_error', 'internal_error']).toContain(result.errorKind);
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} else {
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expect(result.exitCode).toBe(0);
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}
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});
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it('validation_error: strictSdk=true with unregistered command returns failure', () => {
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// With strictSdk mode, if the command is not in the registry, the bridge throws before execution.
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// Since we cannot easily pass strictSdk through the current executeForCjs signature,
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// this test documents the gap. We instead test validation via an empty registryCommand.
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const result = executeForCjs({
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registryCommand: '__nonexistent_xyz__',
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registryArgs: [],
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legacyCommand: '__nonexistent_xyz__',
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legacyArgs: [],
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mode: 'json',
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projectDir: '/tmp',
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});
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expect(result.ok).toBe(false);
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if (result.ok) throw new Error('Expected ok:false');
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// The bridge uses strictSdk=false by default, so unknown commands go through transport
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// and the subprocess fallback is disabled (allowFallbackToSubprocess=false), which
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// causes a native_failure. Or it may be unknown_command from the registry.
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expect(['unknown_command', 'native_failure', 'validation_error']).toContain(result.errorKind);
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});
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it('idempotency: calling twice with identical input returns identical output', () => {
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const input = {
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registryCommand: 'generate-slug',
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registryArgs: ['Idempotency Test'],
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legacyCommand: 'generate-slug',
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legacyArgs: ['Idempotency Test'],
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mode: 'json' as const,
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projectDir: '/tmp',
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};
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const result1 = executeForCjs(input);
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const result2 = executeForCjs(input);
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expect(result1.ok).toBe(result2.ok);
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expect(result1.exitCode).toBe(result2.exitCode);
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if (result1.ok && result2.ok) {
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expect(JSON.stringify(result1.data)).toBe(JSON.stringify(result2.data));
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}
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});
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it('idempotency: unknown command returns same errorKind on repeat calls', () => {
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const input = {
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registryCommand: '__idempotency_test_unknown__',
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registryArgs: [],
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legacyCommand: '__idempotency_test_unknown__',
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legacyArgs: [],
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mode: 'json' as const,
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projectDir: '/tmp',
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};
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const result1 = executeForCjs(input);
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const result2 = executeForCjs(input);
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expect(result1.ok).toBe(false);
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expect(result2.ok).toBe(false);
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if (!result1.ok && !result2.ok) {
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expect(result1.errorKind).toBe(result2.errorKind);
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expect(result1.exitCode).toBe(result2.exitCode);
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}
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});
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});
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